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arXiv 2012.06225cond-mat.soft
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用于复杂薄膜研究的微流控薄膜压力天平

Microfluidic Thin Film Pressure Balance for the Study of Complex Thin Films

Sébastien Andrieux, Pierre Müller, Manish Kaushal, Nadia Sofía, Macias Vera, Robin Bollache, Clément Honorez, Alain Cagna, Wiebke Drenckhan

摘要:

自支撑液膜的研究由于其与许多基础和应用科学问题的相关性而越来越受欢迎。它们构成肥皂泡和泡沫,用作气体传输的膜或生物物理学中的模型膜。更一般地说,他们提供了一个方便的工具,在软物质科学的界面和约束驱动的影响有关的许多基本问题的调查。过去已经开发了几种方法和装置来可靠地保证这种膜的变薄和稳定性,所述膜通常由低粘度的水溶液/分散体产生。随着对由强粘弹性和复杂流体制成的也可能固化的膜的研究兴趣越来越大,需要开发新一代设备来可靠地管理这些配方所施加的约束。因此,我们在这里提出了一种微流控芯片设计,它允许可靠的创建,控制和表征的独立膜的复杂流体。我们提供所有技术细节,并通过选择说明性示例(包括聚合物熔体薄膜和凝胶水凝胶)来演示该设备在更大范围的系统中的功能。

英文摘要:

Investigations of free-standing liquid films enjoy an increasing popularity due to their relevance for many fundamental and applied scientific problems. They constitute soap bubbles and foams, serve as membranes for gas transport or as model membranes in biophysics. More generally, they provide a convenient tool for the investigation of numerous fundamental questions related to interface-and confinement-driven effects in soft matter science. Several approaches and devices have been developed in the past to characterise reliably the thinning and stability of such films, which were commonly created from low-viscosity, aqueous solutions/dispersions. With an increasing interest in the investigation of films made from strongly viscoelastic and complex fluids that may also solidify, the development of a new generation of devices is required to manage reliably the constraints imposed by these formulations. We therefore propose here a microfluidic chip design which allows for the reliable creation, control and characterisation of free-standing films of complex fluids. We provide all technical details and we demonstrate the device functioning for a larger range of systems via a selection of illustrative examples, including films of polymer melts and gelling hydrogels.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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